Comparison
Overview
Company snapshot and where each provider is based.
| Field | Mitto | SMSAPI |
|---|---|---|
| What it is | Swiss omnichannel CPaaS provider offering SMS, RCS, WhatsApp, Viber, Telegram, Facebook Messenger and voice messaging APIs for business communications. | A Polish business-messaging platform (a brand of LINK Mobility Poland, part of LINK Mobility Group) offering bulk SMS, MMS, VMS voice, RCS and WhatsApp Business messaging via REST API and a web interface. |
| Founded | 2013 | 2007 |
| Ownership | private | public |
| Employees | 100-250 | 51-200 |
| HQ city | Zug | Gliwice |
| HQ country | Switzerland | Poland (EU) |
What's the differenceMitto edges ahead on the overall messaging.dev Score (48 vs 44). Mitto is private and headquartered in Zug, Switzerland; SMSAPI is public and based in Gliwice, Poland (EU).
Channels
Which messaging channels each provider can send and receive on.
| Field | Mitto | SMSAPI |
|---|---|---|
| SMS | Yes | Yes |
| MMS | No | Yes |
| RCS | Yes | Yes |
| Yes | Yes | |
| Viber | Yes | No |
| Facebook Messenger | Yes | No |
| Telegram | Yes | No |
| Apple Messages for Business | No | No |
| Voice | Yes | Yes |
| No | No |
What's the differenceThey share 4 channels. Mitto additionally offers Viber, Facebook Messenger, Telegram, while SMSAPI additionally offers MMS.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | Mitto | SMSAPI |
|---|---|---|
| Self-service onboarding | Yes | Yes |
| Free developer credit | No | Free test SMS on signup |
| Docs quality | med | high |
| Documentation | Open ↗ | Open ↗ |
| SDKs | — | PHP, Python, JavaScript, Java, C#, Go, Bash |
| Sandbox / test env | Yes | Yes |
| API types | REST, SMPP | REST, SMTP |
What's the differenceOn SDKs, SMSAPI adds PHP, Python, JavaScript, Java, C#, Go, Bash; on API types, Mitto adds SMPP; SMSAPI adds SMTP.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | Mitto | SMSAPI |
|---|---|---|
| EU data residency | No | Yes |
| US data residency | No | No |
| Choose region | No | No |
| GDPR | Yes | Yes |
| ISO 27001 | Yes | Yes |
| SOC 2 | No | No |
| HIPAA | No | No |
What's the differenceSMSAPI offers EU data residency, while Mitto does not.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | Mitto | SMSAPI |
|---|---|---|
| Retention policy | Per-message retention of content (textRetention) and of the recipient number (toRetention) can be set per API request to Undefined, Retain, or Discard; no global retention duration is publicly documented. Per the privacy policy, account/registration data is kept until deletion is requested and contact-form data until the conversation ends. | Messages are stored in accordance with applicable law and disclosed only when required by a lawful request; phone numbers are used solely for SMS campaign purposes. No specific retention period is publicly documented. All data is held within the EEA on two redundant data centers in Poland (ATMAN and T-Mobile, over 150 km apart). |
What's the differenceMitto: Per-message retention of content (textRetention) and of the recipient number (toRetention) can be set per API request to Undefined, Retain, or Discard; no global retention duration is publicly documented. Per the privacy policy, account/registration data is kept until deletion is requested and contact-form data until the conversation ends. SMSAPI: Messages are stored in accordance with applicable law and disclosed only when required by a lawful request; phone numbers are used solely for SMS campaign purposes. No specific retention period is publicly documented. All data is held within the EEA on two redundant data centers in Poland (ATMAN and T-Mobile, over 150 km apart).
Pricing & Credits
Pricing model and the cost of a first message.
| Field | Mitto | SMSAPI |
|---|---|---|
| Pricing model | Pay-as-you-go — pay only for what you use with no contracts, plus volume discounts and custom plans via sales. | Pay-as-you-go prepaid credit — pay only for sent messages with no setup fee or contract; minimum top-up around €30. |
| SMS starting price | Not published | From ~€0.04 per SMS (international, varies by destination country) |
| Free developer credit | No | Free test SMS on signup |
What's the differenceMitto and SMSAPI are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | Mitto | SMSAPI |
|---|---|---|
| Countries covered | 230 | 0 |
| Direct operator connections | Yes | No |
| Published uptime SLA | No published SLA | No published SLA |
What's the differenceMitto leads on Countries covered (230 vs 0 for SMSAPI); Mitto offers Direct operator connections, while SMSAPI does not.
Company & Trust
Independent reviews and company profile.
| Field | Mitto | SMSAPI |
|---|---|---|
| G2 rating | 4.0 | 0.0 |
| G2 reviews | 2 | 0 |
| Ownership | private | public |
| Employees | 100-250 | 51-200 |
What's the differenceMitto leads on G2 rating (4 vs 0 for SMSAPI); Mitto leads on G2 reviews (2 vs 0 for SMSAPI).
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